/*
 * Copyright 2009 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gtugs.service;

import org.gtugs.domain.Chapter;
import org.gtugs.domain.Country;
import org.gtugs.repository.CountryDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import com.google.appengine.api.memcache.MemcacheService;
import com.google.appengine.api.memcache.MemcacheServiceFactory;

import java.util.List;

/**
 * @author jasonacooper@google.com (Jason Cooper)
 */
@Service("countryManager")
public class SimpleCountryManager implements CountryManager {

  private static final String COUNTRIES_MEMCACHE_KEY = "countries";

  @Autowired
  private CountryDao countryDao;

  public List<Country> getCountries() {
    MemcacheService ms = MemcacheServiceFactory.getMemcacheService();

    if (!ms.contains(COUNTRIES_MEMCACHE_KEY)) {
      ms.put(COUNTRIES_MEMCACHE_KEY, countryDao.getCountries());
    }

    return (List<Country>) ms.get(COUNTRIES_MEMCACHE_KEY);
  }

  public void storeCountry(Country country) {
    MemcacheService ms = MemcacheServiceFactory.getMemcacheService();

    countryDao.storeCountry(country);
    ms.delete(COUNTRIES_MEMCACHE_KEY);
  }

  public void setCountryDao(CountryDao countryDao) {
    this.countryDao = countryDao;
  }
}
